Thank you @edouard, I was hoping someone would get excited about my books! :-) And for certain, the first book is the most recommendable one. Pussy Riot is not too far off, actually, and it's interesting to see the stories associated... Almost seems like the Soviet regime was less repressive than that of modern Russia. The difference, however, is that back then the only option they had was to hold the concert in an apartment, as they had nowhere else to go.